A Study to Evaluate the Good and Bad Effects of BIBF1120 in Small Cell Lung Cancer Patients Who Have Previously Benefited From First-line Platinum-based Chemotherapy

This study is being done to evaluate the good and bad effects of BIBF1120 in recurrent, platinum-sensitive small cell lung cancer patients and to see if BIBF1120 may or may not be more effective and better tolerated than standard therapy. The purpose of this study is to: * Find out the proportion of patients with their small small cell lung cancer controlled for at least 90 days after treatment with BIBF1120 * Compare the response rate, survival and side effects of BIBF1120 in recurrent, platinum-sensitive small cell lung cancer patients * Identify a group of patients who will benefit the most from BIBF1120 In this study, patients will receive BIBF1120 at 200 mg twice daily continuously. A cycle will be 21 days. During treatment, the dose of BIBF1120 will be held or reduced to lower doses if patients do not tolerate it well or if the doctors are concerned about the side effects of BIBF1120 on individual patients.